18743350136 has 32 divisors (see below), whose sum is σ = 42526931040. Its totient is φ = 7560342528.

The previous prime is 18743350097. The next prime is 18743350181. The reversal of 18743350136 is 63105334781.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18743350093 and 18743350102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9843245 + ... + 9845148.

It is an arithmetic number, because the mean of its divisors is an integer number (1328966595).

Almost surely, 2^18743350136 is an apocalyptic number.

It is an amenable number.

18743350136 is an abundant number, since it is smaller than the sum of its proper divisors (23783580904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18743350136 is a wasteful number, since it uses less digits than its factorization.

18743350136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19688423 (or 19688419 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 18743350136 in words is "eighteen billion, seven hundred forty-three million, three hundred fifty thousand, one hundred thirty-six".